Air filter elements should only be changed based on calendar time and:
a. by putting a light inside to check for cleanliness
b. by tapping it against a tire to see how much dust comes out c. by measuring exhaust color
d. by checking air inlet restriction
D
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In current Detroit Diesel DDEC managed engines, which controller module occupies the SA 00 address on the J1939 data bus?
A. motor control module (MCM) B. common powertrain controller (CPC) C. personality module (PM) D. electronic control unit (ECU)
Low humidity (dry air) permits heat to be taken away from the human body by evaporation of perspiration.
Answer the following statement true (T) or false (F)
Which structure is formed when cells multiply and divide to form a spherical mass?
a. Cleavage c. Ovum b. Embryo d. Morula
A ____________________ is a substance of inorganic origin
Fill in the blank(s) with correct word